Wow, I didn't know this thread was here. I should check this forum more often!
As I've said in chat, I love it. He really does look like he just kicked some ass - it looks like it could be a win portrait in a fighting game, which is cool, and actually kind of what I intended when I requested this, though I guess subconsciously.
My favorite part is the shading, especially the way his neck looks so realistic. Look! He's got a sternum, just like a real person!
The contrast between the blood from the head wound and the hair isn't particularly obvious; the similarity is enough to make the blood coming down from his head look like an extension of his hair. The wound itself also doesn't look realistic, I think. The blood seems to flow down from his otherwise unblemished hairline without affecting any of the hair.
"Tell you what, Leto, I won't fight with you. Zeus' wives are pretty tough customers. You have my permission to boast openly that you have beaten the daylights out of me."
-Hermes, the Iliad (Stanley Lombardo, translator) Book 21